Chrome and Opera both display the HTML banner in AgTalk but the new Firefox doesn't.  I've checked and have javascript enabled and have downloaded the latest Adobe Flash.
I don't know what runs the bar, I tried removing Firefox 64 bit and installed the 32 bit version. That didn't work and I re-installed the 64 bit version.  I also installed Comodo Icedragon which is based on Firefox and it didn't display the banner either.  I've been unsuccessful looking on the Internet for any hint and because it's AgTalk I suspect that the Mozilla forum won't have anything to help.
Below is what I see in Firefox and then what I see normally.

(missing.JPG)

(notmissing.JPG)

(0KB - 291 downloads)

missing.JPG (20KB - 301 downloads)

notmissing.JPG (21KB - 299 downloads)